S-1004CB26I-M5T1U

Series:	S-1004
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Voltage Detector
Number of Voltages Monitored:	1
Output:	Push-Pull, Totem Pole
Reset:	Active Low
Reset Timeout:	--
Voltage - Threshold:	2.6V
Operating Temperature:	-40°C ~ 85°C (TA)
Mounting Type:	Surface Mount
Package / Case:	SC-74A, SOT-753
Supplier Device Package:	SOT-23-5

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Introduction

The S-1004CB26I-M5T1U is a microprocessor (μP) Supervisors module that is used to monitor and protect microprocessors and peripheral integrated circuit (ICs) in electrical equipment operated in an environment with a hazardous voltage, which is over 60V AC/DC. This module provides the function of over-voltage and over-current protection based on an integrated circuit (IC) and contains a power/reset output driver. It is commonly used in various electrical or electronic devices such as power supplies, digital appliances and data controllers, to prevent damages caused by a over-voltage or over-current surge.

Application

The S-1004CB26I-M5T1U module is mainly used in power supplies and other electrical equipment, so as to ensure an adequate level of safety for these devices in a hazardous voltage environment. The Supervisors module also effectively provides a mechanism of power-reset protection and manages over-voltage and over-current situations. The S-1004CB26I-M5T1U is commonly used in a variety of electronic and electrical applications, including medical, automotive, telecom, industrial, and home applications. It is also used in power supplies of common electronic devices such as laptops, LCDs and printers.

Working Principle

The S-1004CB26I-M5T1U module is designed to provide over-voltage and over-current protection for the peripherals and integrated circuits (ICs) in electrical equipment by means of an integrated circuit (IC). The module also contains a power output/reset driver. The integrated circuit on the module consists of a comparator and an impedance keeper, which controls a PMOS switch. Both the comparator and the impedance keeper must have their operating voltages set to the appropriate levels for the module to work properly, which is the job of the Virtual Ground (VGND) pin.The comparator on the integrated circuit works similarly to an actual comparator, where its output is determined by the difference of the two input signals. The Voltage SENSE pin feeds a sense voltage to the non-inverting input of the comparator, while the VOLTAGE CLAMPED pin is connected to the inverting input. When the sense voltage rises above the clamped voltage, the comparator’s output is triggered. The impedance keeper is a circuit device that is designed to keep voltage on a node at a constant level. In the S-1004CB26I-M5T1U module, the impedance keeper is connected to the comparator’s output and it helps to ensure that the clamped voltage is kept within a set range by regulating the current flow through the output of the comparator.When the sense voltage rises above the clamped voltage which is set by the VOLTAGE CLAMPED pin via the VGND pin, the comparator’s output is triggered and the impedance keeper starts to regulate the current flow through the output of the comparator, which in turn will activate the power/reset output driver. The power reset output driver is responsible for driving logic to pull the power or reset pin according to the system’s requirements.

Conclusion

In conclusion, the S-1004CB26I-M5T1U is a microprocessor supervisors module that is used to provide over-voltage and over-current protection for electronic and electrical equipment. The S-1004CB26I-M5T1U can be used in various applications such as medical, automotive, telecom, industrial and home applications. It contains a comparator and an impedance keeper, which are connected to the VOLTAGE CLAMPED pin and GND pin.When the sensed voltage rises above the clamped voltage, the comparator’s output is triggered and the impedance keeper regulates the current flow through the output to activate the power/reset output driver. The power reset output driver then pulls the power or reset pin according to the system’s requirements. This helps the S-1004CB26I-M5T1U ensure adequate safety in a hazardous voltage environment for the electronic and electrical equipment that it protects.

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